Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e9a75bec3a66d6…

MALICIOUS

PDF

185.7 KB Created: 2015-08-05 21:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b00204c91c173f0462ad40bb99a1e5c1 SHA-1: 1eb5cef9424906585e3ae48422261de1bfbca823 SHA-256: a9e9a75bec3a66d6fde00f1d4bf528748132e9ed5c32b8832856508cc4a27f44
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector. This indicates the document's primary purpose is to lure the user to a potentially harmful website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D0%B0%D0%B9%D1%82%D1%8E%D0%BD%D1%81+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%B9%D1%84%D0%BE%D0%BD%D0%B0+3gs&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304608_spravka_po_forme_banka_mdm_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305188_skachat_programmu_dlya_vk_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306948_skachat_serial_split_tayna_krovi_1_sezon_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a7af.bin
f3809453158b859d417de795c997501d04484bdee70ad609c145f4a9c8cbcf17		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7AF 7368 bytes
font_00_sfnt_off0002425f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2425F 3556 bytes
font_01_sfnt_off00024fe2.bin
9d67d27d1485cd18c0ebe9a187b4b11693c9c2d1d4b47ac06d621cc87f5e3510		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FE2 14392 bytes
font_02_sfnt_off00027d05.bin
15760fe9db96c2eb32b6946179c5a4b96f95668243a489c5a785f835e8c747c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D05 14468 bytes
font_04_sfnt_off0002bd32.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD32 6084 bytes
font_05_sfnt_off0002ccc7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCC7 3752 bytes

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